Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8cae0284f7d72b579f1de4dea7fef1d9394dae1cbd06196c07d60bd60dc4db94' 
  AND token = '1XKsjLS0q6nve0DQJBIQmSFOi/SKBRZAObb5ZQcNQJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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