Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4d75da26efc7cdb0f2de620f7117ca8d7d5181c052000cfb53ee1c6ff4c4f11' 
  AND token = 'aAWuOSb/OWLJbKnUn+TevyR6jlmninEViv6pbMmT3AI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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