Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd217a1224621beacfbdd03dbb63da5c76d83fa2f49dbc5d25e06e4ebd3589cfe' 
  AND token = 'kQOg/Ub2BVLz5uSAn9ogAECwt41gq3V0KrKrcy2/fkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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