Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60c1afb6b6b26ed921569071a41fb60c3c1724bd9d4087dcd10dfa615e72783f' 
  AND token = 'jIum/fYnM8kav7tuYnmdZ5Hknu0u79Z9WKF6HSPce9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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