Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '192031391e9f143ab48b95279820f33e83f0af1d100680deb50e0d2bcdf73626' 
  AND token = 'Z3eNopObAlSgFOdEKTfjpSQfdIkEsjJDgcxOo5dZDUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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