Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce7095784a2e558e8d649194903851cad090e2bc04736b55b204974dfabcbbe9' 
  AND token = 'mU80EGJ4Gt/r4m56GShQJR6MiC/zU8BDfNMnOvApGzE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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