Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb2916cddbc34f58f573ed9c82379f44028148fbd15d72033d3d49252e2d8245' 
  AND token = 'Q0POm7W/aPr7G4VYpG6H2IIsxshtWOdi7mRuVplQRhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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