Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1b32a986515d66d12fda1748c39e1758cc698dec456a5a24733f657bfc6ad2a' 
  AND token = 'S9SC0U7usIcCCCHna/snMOk4QZLSx/upfj8TB4lQjWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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