Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22adb9b3bea8d7c3b4bb6cbd069f52ceb739879ca476486683d496509575ba5a' 
  AND token = 'gheGKUsov1x16Stn+2rs9MN5Bxd00VbmRXSGiKD/H8s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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