SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93bf94a8e5852619767afb419626805d3248f2722c201732752e18591bd943e3' 
  AND token = 'JHZIwZ/SCdl3oEaGSNAX2xjFTpUBpQP1d5+otcuKv/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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