Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '83a9d22acd66df0705f1ded30534cbb0bb3da9ef75287a752041ee7ef948efe1' 
  AND token = 'yamVtvNur/4pD4Ryp4CbaQ2Rzf4FuHL5jzmvXDLRhpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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