SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0def41e7a037479c59deb7570fa15d99dc1de4f274b92c7921ae9c62a1650ce6' 
  AND token = 'wnFe+vHosVK03awEirFnsEQFe92M5Er9MDNEoUlofnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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