Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1d1d6f16982913dddb388425da244d4e5915f2c60ea34da65da713f2da9a1390' 
  AND token = 'SlBL3te4eGmbuI85NSO8Q7kcJI0u2/xE+H5RWJl7Zq0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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