Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '077c2987e9df344ae2de3d62f1831a32c0dd6015841f64066583ded37d1defd4' 
  AND token = 'gwrqhP67cYyvrY8w1+AwwKtd4aIcIigB2XiHeymiIns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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