Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebc4fa9255ac0606b5e5e1a70e243ff647acb916ca20395021cce321297a0986' 
  AND token = '0svLSPsk8S4B0MVLy/avnQs6YJYsEEW/I0sRrN6qYrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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