Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eda2ef5d02c0c2f7149810af6d257912cc59ceb69b621d89a7b30a23cde2063b' 
  AND token = '1+8ix2a1obD9+iGNDzT5UVrtIND4DRIi2Swje56mKT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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