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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd83e94c13cb05681dfa9f1cbc5f788673fadc87b5021c3c7e9b7ddc03f21acfe' 
  AND token = 'tXF/Sky+yshCo59cIyjtOBBfBLNRII7qQHx0mbzXMjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00066

JSON explain

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