Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45a1701930b8aed4130225080c7448cd7a2cfc20b40a0ce559d713fd74694203' 
  AND token = 'vPm0bE24Tlvnk1RAEN/IDeGhteCbEbGhRp23KnLQ2Cs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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