Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f849bb1a6d439261600554749dee674abd2f1b8c3c0349825286527a5f3a9d86' 
  AND token = 'aduDPT8ZW5ydHcDfZ8T4lFZP+/0CzydgSpRKPZKC2us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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