Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41003de64d305028e689c16968156c70e6fdea06d513a6764965aac347e32a44' 
  AND token = 'S7FefhUTZgGp+WjZI11PoJMVg1k2JPstZ5CEhJQVfIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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