Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '150ad7c522cf7a6db4a4003ea73ff9b5188118fc66fecc358f473c0b63737596' 
  AND token = 'Yp3pM0mqL+k1qU8N59cNBTQa8a+eImN1Mpdz9IeR1qk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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