Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8db2e901dde2824bc90441ffea16a1a77cca22920490357e08324a9b35c4cd99' 
  AND token = 'YTFMmV+koEZxX32JMVlPXWhYX/D0cVteJAaIaseASTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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