Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1041633707ea71b46a520dcfe2afb719203ce5282eff8bf72b97bda1c793b94d' 
  AND token = 'XWX1Q91zf+gnxMaib2A0IPsd27Cb0ZeDOJ2YVq9hNFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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