Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f62472c6e5000c66f67f095c00082f758e68489429bd3b376a380627de381e82' 
  AND token = 'JHeZE9DAmFR22zficvdGITh+NS4HFwG1wu8pbNYI2tY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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