Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7fae1d74e12def51ec9d96232ee13290bd125955b5048a9a18c74738872019c' 
  AND token = 'XrwUPLbfL0R7qzjAr2AVUBED7RKYvf79rWcTrp7lNns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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