Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e367ec101265324a15661d2ecaa47b912042e7d2bf5a2959a9ba3d2739e58714' 
  AND token = '2E04V5Heg2fBZvs2Do50Z3/d1YVlqa11dj8So9WFViQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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