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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce00c64ace49139ad6eb1b38fe77a6d43edfc0fd95a43634239881d6d6738eaf' 
  AND token = 'OT713iPjL2ifQanmnIGu1Y+5Qnl7vlaTlsbKD6l8R4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}