Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6da306759e78b992120fc8441293be1f6f20f4af660b3be8bc10cd8df327ba5d' 
  AND token = 'mU2BgJOWnHaakbiowJC3s89b7xGC75O9VPosvafI71w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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