Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4383d1e472f291e28b01032f207aa5eb2e12abd5bce076f8fa2a27184bcc5c82' 
  AND token = 'mzC2iblGRGJog9Wx6/dyMRu92mbvEO0kSV/8325Qid4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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