Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3ccc1856b903fa53c08ce7d10dba293f2e23918ae17c7f5989a3cbcb7c0dd46' 
  AND token = 'Aopov6fluCl/WHqA20kmP6+50uc4Zxhvv+ckzfOiObM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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