Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '297fca56c95d75b725f55d8472d2c1d37f361096bba67b60a9bea78ce1439601' 
  AND token = 'uJpfOM7NicYIv9h3MzdKPNTM7HKoNk4FtdOwyMBId34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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