Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6b5d078396149d1de3be51b3bd63968e4062bd59adac1bdcdf81c2de8e2c4b7d' 
  AND token = '7f66n1hqe/H/YyEfSk7h3eh5Fddut8EsDoJyvh1LQnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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