Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9a3869d62b0add4a20a9a07bab687f003f2971f2ed8d517f5b7fe10b0e300d0' 
  AND token = 'SSxA3dpbsRuHG192EszIkOeC1Yzab5NHJ14FDOEI9G8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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