Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a8914cc500fea991d76942e210322ac27c32ad225a4eb6d1f67795c3bbdcf229' 
  AND token = 'v0Bpq0SYx6yDqH5xSLtzb2v++eQJ/vFlIYWiHwJvr5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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