SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9213094b9d493780f44785b6af10da4ef97389e0331147cc42b0f9cacbddf58e' 
  AND token = 'VJil08LV/G9s8DOXOTjGMSBOYGrKjLlXCSiWT5Q+mJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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