Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ff33ee2445e7e9840030e82c32077908947dce82a48453e2d300dc71fb68272' 
  AND token = '6bE5vbL1BZN5VnAQhTpoOPGOX4p5nyYk0FkVTIW5T3Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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