Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b145479dd8614522542c231ced72ee843e7dba831b3a1cd8b0a1f8e758076805' 
  AND token = 'TRdFwPsWu1Vw027r9Zoi2mfk7ozi74pJnSzgQscczCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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