Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f263d90656d1069ae2eae02d9bc54f2ede7c40ea128c33c980633ac254d0c85e' 
  AND token = 'CDdMGyeKfYDWhg08zC0V7/wp+hkEt+0whAWlVKj9ttI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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