Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a807c5577d2673156290095a68b9bb565ba56d0430b94d4ea1912b375e89e7c0' 
  AND token = 'GBSCMMfD+aNpUGVskAPVIlD4ntXO1YYlxz4/3F+k1v0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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