Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a32a7ca3a0599c9f6121412dcb8ebd416c8dec4b65be7c4b311989c796e01b43' 
  AND token = 'TUh9Z/fNHNkVvrRHPvNH03lAZtuthwtxr3kul5tew80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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