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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d3287149b6c94c00543f8132fd60f2cf81c878ec9f13cb7e82d3fc6c349a6b6' 
  AND token = 'OooHR1EKBK3ld6meN+Kacf0uU/nsE+V6SY2CfKCMVx4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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