Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd1735c33bb9ece1a73a94ed6b05b9583c2c2a543692474e48677a0884e1f1b7' 
  AND token = 'k2nQPzG8C0m+blJu0f4unIsZy0bQjlkJUfyVcabVWhU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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