Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c25e14bd5f079a5fdf6952ac477e4cf424c3ffaab6553ec6e24a3f7cb9f17cde' 
  AND token = 'XVKRXY/t5ttrXao+kED0AhPPlccvmmSJ4cb+1gK829Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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