Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0bdabd53544267a00fbaaf56bb0115c809714b93e481f1698be639c3370981a' 
  AND token = 'aO1AJM4VAKXyviG5oXtb95j70zhA4wk7ZPR2QQlj+yE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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