Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd11bbe7d624fdb2b023299163691e51e770b4c358ab6c9edbeea17cc147b0b3e' 
  AND token = '3DO5u1JX/hlXppZrCi8Q6JZbJiFNJS8btNcDri7d0JA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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