Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57d2ee53d28d4ba5e7d44a767ba1820ac433c4fb761b2424f152385ea7adfd54' 
  AND token = 'cP2TSpF3cn/I8AluR4c4LBArSoDrchLqZCemGLO06Lc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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