Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2c10acc61ea7459f36e2c05123445fbb5d17b9549f4f4a0023485accd36998ce' 
  AND token = 'EhbTSxzSPZBCFawT7ntJsaFsvtSIQecU33NUlS3kywk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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