Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db6e093ba49b71dc75af7962c7c5f10217cecbf81272719771d9326d7436479a' 
  AND token = 'eUZpfZUVkX5H7fo6gZyiOf59dtMhl0eFrWrHvUZ9TNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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