Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2e9482d8d6589d8968981a4436f7c6bf0ebcf60d1a7d72c6edc8669f14b3e53' 
  AND token = 'm+koO1+MWEqX1oaYQ0Y3rJcduX3247mgRHsocFtADgc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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