Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b775bf89b359c3693822ceee07cdba42ce8ef00d95ae7b9248d80af5498ebd9' 
  AND token = 'n1blu0Y5vys4VbvP8CR/1hG4Y454FhyEJFjDONj68Mc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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