Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4daef4128e27fddb44eb4b074dba06f8f72ffa10147e1b6927051bd247b62890' 
  AND token = 'jlky4Er3/PwY4vnmMEqaYQ6gHH84GXqboY7B6FJAfkI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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