Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '580c9ac835d37dc6feb58a5373b454ae05c5940854f467f1b76a16799802790d' 
  AND token = 'EUnPvcVFTK7kAHy1QnapGCd3NbJeCu/UReYCsMm0hw8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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