Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de2e38d487a7d2064ed15a3fad5f0d699113db411370a6d3ba110bc5c3a8b566' 
  AND token = 'eldR9S0BHPAqhFYe1w6UtQ/Jlk3m445CQWjHF4kcyao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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