Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e7140da0c4ce82c08f7ed90c6c01d29344937a3209e772ca4a7224fefbeeb2e' 
  AND token = 'gRD0whDmN5SCh/oGyNxnRU40WgQBHmOby/o6w3sf7q0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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