Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0cbc8d17a99f8b0084d6c86c1a8443dc70527b173ef6d147fdd3e94fb4b8fde' 
  AND token = '2ioKpGuO+oXnUEEPq3xJCxXCsZp8bp47mULGQUSMtfo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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