Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '369d9965ac471f22d4530cb277bd4998c08f15132d7916f964cc46cf54ef8e64' 
  AND token = 'C4htpB5psC81EfkPMK51C7qhp+E29vB0KFOyaWYHIQU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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