Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '872f62f0d1b41706914e5fa1108ef8378f1e6907ac6a31fba3de05c268513f48' 
  AND token = 'DBxT0D8mniG33VycmEe0Hh/z3eR4NQK5UMLeNya00WU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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