SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cbfa76d3176f9779d2791ecddf1d2032eacb795ae231f36d4c5ac73177459e0d' 
  AND token = 'nfGQl7/q41RpKz1dGrzRRpjiO2WwKZuOwL66V88nVg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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