Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eff127d8a538b89b682b66cfdaf683860c6067ccaaefec01bffcca27005bd2d7' 
  AND token = 'NGfB+X8LeH3FGF1ue+Fo81AlY1+iblBKzQIJliCkzlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}