Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a1fa69e5afb0989fa0e7eb965a1a69142ac3a792b8c5ca3140b9a0f803d380b' 
  AND token = 'oHU8QvUQbWBQf4A+nlg8Drh9uAGysWCUYojPmbQResM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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