Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2163a023c5b1d0c777212c953ce3128b15f978fe058535cfea60f37b0321ebe7' 
  AND token = 'ZyEZvRWrVXZxTQgZ997gIh2luV5C4/SBOjoayPkK/vI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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