Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e9cd84f452c7950f02786e78aa6a07e052391f5cd467dbcf9fea9db6832e8237' 
  AND token = '9T4ULmGjlRAIo+NKkeTDuMcLwr3daj0Hy8eeGdyoTJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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