Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd82f086b6c0627335652304bbb4f9106ec2811cbaa7fa723d1f0e7b0cb8f09f' 
  AND token = '5YW0uinj6bx3jdtfGoUNscwXBD2+gqB9rGzz7ZJXA0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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