Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66f7e61e35ef55bcf47e7b8ee217175fce33e3012d1eed4c7b312bdd8807f97d' 
  AND token = 'H+9KvRGhAPUVGfwhkOij38P8uRacrxyzrK6cBdF6D1c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}