Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e96bded3f0898ddfdd30a61d0c3ae8e27e3665d488d4c75509e12e029b6b44be' 
  AND token = 'MSLwoMrORpYaVC03PXzR/8ppO7dbO+/tSPk6oLBAukc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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