Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76898f5f3a2689d96a8798bd4cbc5bd411cb53ad84c7b00a080bab92b8e91697' 
  AND token = 'wSChW+2syrya2wFEfBipbMWoXsV/Aot/NIl0veXMLLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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