Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8fd67890062c173399efbac1286e491899e93f3d9a2f5f2a623356a9f72dbbfd' 
  AND token = 'P4lDQ5pghktjzINJgNL8BeQbBYxT2ePDc6hJOANVNI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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