Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e67057478682b8719b0f53c8ec4557df9bc9a7eda4ed596526ef67f4a1c6e0f7' 
  AND token = 'fOoXH9lpDW9ETgkqXdBaTKt0/WooNavAE+8/W4UxgJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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