Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e7441037a588c0dbfc9d0b51167becae32dea45f4f1e0472bf2b0d7b316e473' 
  AND token = 'zCBuSstUgEZErsWTWjYjIefYd77/MTxa5oeZpSLORdY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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